Communication apparatus and method
US5517608A · kind A · utility
13Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1994 |
| Grant date | May 14, 1996 |
| Priority date | — |
| Expiry date | Aug 18, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/1143
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communication apparatus which can communicate by a proper light intensity and can prevent excessive electric power consumption without providing light intensity measuring means on the reception side is provided. There are also provided communication apparatus and method, in which after a CPU issued a first message, a light emission intensity of an infrared LED is changed by the CPU so as to become the optimum state in accordance with the presence or absence of the response of a second message that is performed in response to the first message.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.